The 3MT heat-shrink wall ducts WMD are used to seal telecommunications and power cables in wall ducts. They enable gas- and watertight introduction of cables and pipes into the building. The cables or pipes can also be pulled in at a later date and installation as a reserve duct is also possible. The wavy surface of the wall duct is coated with a special sealing material. This means that when you close the opening with mortar or cement, you achieve a permanently waterproof seal. The scope of delivery consists of a polyolefin shrink tube shrunk onto a support spiral, a cable cleaning cloth and the installation instructions.
